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Note for Chemistry1 - C1 by Prashasti Dwivedi

  • Chemistry1 - C1
  • Note
  • Jaypee University Of Information Technology - JUIT
  • Computer Science Engineering
  • B.Tech
  • 5 Topics
  • Uploaded 5 months ago
Prashasti Dwivedi
Prashasti Dwivedi
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Text from page-1

Concept of pH and Buffer Solutions

Text from page-2

pH • pH = a measurement of the concentration of hydrogen ions in a solution • low pH values → associated with solutions with high concentrations of hydrogen ions • high pH values → solutions with low concentrations of hydrogen ions • Pure water → a pH of 7.0, and other solutions are usually described with reference to this value • Acids → solutions that have a pH less than 7 (i.e. more hydrogen ions than water) • Bases → a pH greater than 7 (i.e. less hydrogen ions than water)

Text from page-4

Explanation of pH • pH scale = - log [H+] • pH unit is a factor of 10 difference than the next higher or lower unit • a change in pH from 2 to 3 represents a 10-fold decrease in H+ concentration, and a shift from 2 to 4 represents a one-hundred (10 × 10)-fold decrease in H+ concentration

Lecture Notes